In E. coli, paaZ encodes a bifunctional protein consisting of an N-terminal NADP-dependent aldehyde dehydrogenase domain and a C-terminal MaoC-like (R)-specific enoyl-CoA hydratase domain. In Burkholderia genomes, a gene incorrectly annotated as paaZ (e.g WQ49_RS11500) encodes only one of the two domains found in E.coli paaZ (the domain with semialdehyde dehydrogenase activity) and so is renamed PacL (PMID:21296885) but was also referred to as PaaZ-ALDH in the manuscript. In the same study , a separate A. aromaticum, protein (UniProtKB:Q5P232) with the (R)-hydratase activity was annotated as Ech-Aa and the Burkholderia ortholog was annotated as PaaZ-ECH.